DTC 46

DTC 46 Chart Personal Automotive Security System:

Personal Automotive Security System Wiring Diagram:

Circuit Description:

The PASS-Key� II system is designed to disable vehicle operation if the incorrect key or starting procedure is used. The PASS-Key� II decoder module sends a signal to the ECM if the correct key is being used. If the proper signal does not reach the ECM on CKT 229, the ECM will not pulse the injectors "ON" and thus not allow the vehicle to be started.

DTC 46 will set, if the proper signal is not being received on CKT 229 by the ECM when the ignition is turned "ON." A PASS-Key� II fault will store a DTC 46 in the ECM memory.

Test Description: Number(s) below refer to circled number(s) on the diagnostic chart.

1. If the engine cranks, but doesn't start. It indicates that the portion of the decoder module which generates the signal to the ECM is not operating or CKT 229 is open or shorted to ground. If the decoder module is found to be OK, the ECM may be at fault, but this is not a likely condition.

2. If DTC 46 is stored, and the engine will not crank, it indicates that there is a PASS-Key II problem or an incorrect key or starting procedure is being used.